Interface structure and properties of a brass-reinforced Ni59Zr20Ti16Si2Sn3 bulk metallic glass composite

被引：30

作者：

Wang, K. ^{[1
]}

Fujita, T. ^{[1
]}

Pan, D. ^{[1
]}

Nieh, T. G. ^{[2
]}

Inoue, A. ^{[1
]}

Kim, D. H. ^{[3
]}

Chen, M. W. ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Yonsei Univ, Dept Met Engn, Seoul 120749, South Korea

来源：

ACTA MATERIALIA | 2008年 / 56卷 / 13期

关键词：

bulk metallic glass; composite; interface; mechanical property;

D O I：

10.1016/j.actamat.2008.02.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Interfaces between a Ni59Zr20Ti16Si2Sn3 bulk metallic glass (BMG) and crystalline brass reinforcements were characterized using transmission electron microscopy and nanoindentation. An interfacial layer with a thickness of similar to 50-100 nm was observed in the composite prepared by warm extrusion of gas atomized powders. Microstructural characterization and chemical analysis suggest that the formation of interfacial layer was caused by interdiffusion between the BMG and brass during the warm extrusion. Nanoindentation in the vicinity of BMG-brass interfaces does not cause interface decohesion or crack formation, suggesting a strong interface bonding. Apparently, the resultant interfacial layer not only enhances interfacial bonding but also provides a buffer zone to prevent the catastrophic shear band propagation in the BMG matrix. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：3077 / 3087

页数：11

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